Abstract
Dynamically vulcanized Nylon 1010/ethylene-vinyl acetate rubber (EVM)/SiO2 nanocomposites were prepared. Maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-g-MA) and nano-silica (SiO2) was used as a compatibilizer and a filler, and silane coupling agent (KH550, 3-triethoxysilylpropylamine) was used to improve the dispersion of SiO2 in the nanocomposites. The nanocomposites were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), dynamic mechanical analysis (DMA), differential scanning calorimeter (DSC), and rheology analysis and mechanical properties test. SEM and AFM images showed that the compatibility between Nylon 1010 and EVM was improved by adding the compatibilizer. An increase in SiO2 content and the addition of the compatibilizer led to an increase in the tensile strength of the nanocomposite. A nanocomposite based on Nylon 1010/EVM/DCP (30/70/0.8) with tensile strength of 16.3 MPa and elongation at break of 180% was obtained by the addition of 15 phr EVA-g-MA and 40 phr SiO2. The non-isothermal crystallization processes of Nylon/EVM blend were investigated by DSC. It was observed that EVM rubber could act as heterogeneous nuclei for Nylon which was more effective in Nylon/EVM/DCP blend than in Nylon/EVM blend. POLYM. ENG. SCI., 55:581–588, 2015. © 2014 Society of Plastics Engineers
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